With the increasing use of renewable energy, distributed energy is ushering in opportunities for development. At the 3rd International Forum on Distributed Energy and Energy Storage Technologies concluded recently, industry insiders pointed out that at the transmission and distribution end, the smart grid as its supporting foundation is the future direction of power grid development. People of the State Grid Corporation of China and Huadian Group also revealed to reporters that the power system is closely following the trend of distributed energy development and is pushing for smart grid construction and distributed generation.
Zhang Guobao, director of the National Energy Commission’s expert advisory committee and former director of the National Energy Administration, pointed out at the forum that the smart grid, like the Internet, can respond to the ever-changing energy supply situation. “So far there has been controversy over whether solar energy and wind power are controllable. The problem of abandoning wind, abandoning electricity, and abandoning water is the problem that the network is not smart enough and sound enough.â€
Zhu Zhongxing, deputy director of the Foreign Trade Development Bureau of the Ministry of Energy and Trade, also believes that as a combination of advanced information technology and advanced physical power grids, the smart grid is the best solution to future energy transmission problems and is the major trend of future power grid development. At the same time, he said, "With the rapid development of distributed energy, access management policies and power grid upgrades continue to exert force, will give the smart grid distributed energy equipment market development opportunities."
At the government level, the State Council Standing Committee recently held several industrial support policies, one of which is the application of distributed photovoltaic power generation, electricity price support, and the construction of supporting projects for power grid companies. In February of this year, the State Grid Corporation released the "Opinions on Doing a Good Job on Distributed Power Grid Services," and clearly stated that it supports the development of distributed power supplies.
Jiang Liping, deputy director of the State Grid National Grid Energy Research Institute, told reporters that the idea and direction of the opinions are consistent with national policies, and the general direction is definitely supportive. "The next step is to do specific aspects of the implementation, but they are all under the national overall planning, including the government issued a confirmation of distributed photovoltaic power price subsidies standards, measurement work and distribution channels." She believes that the detailed work of the above countries The network can do, and other agencies can also participate together. The key is to rationalize the functions.
PEEK Plastics,Polyether ether ketone, known in English as polyetheretherketone plastic (PEEK Plastics), is a linear aromatic polymer containing chain sections in the main chain of molecules.Its constituent units are oxygen-pairs of phenyl-oxycarbonyl - pairs of phenyl, semi-crystalline, thermoplastics.
Product name: polyether ether ketone (PEEK Plastics) resin is a kind of excellent special engineering plastics, PEEK Plastics has more significant advantages compared with other special engineering plastics, resistance to high temperature is 260 degrees, mechanical performance, good self-lubrication, resistance to chemical corrosion, flame retardant, stripping resistance, abrasion resistance, no strong sulfuric acid, nitric acid resistance, radiation resistance, strong mechanical properties can be used for high-end technology such as mechanical, nuclear engineering and aviation.
PEEK Plastics has heat resistance, chemical stability and the forming process of thermoplastic plastic. PEEK Plastics has excellent heat resistance.Its thermal deformation temperature of 160 ℃, with 20% ~ 30% Glass Fiber reinforced, heat distortion temperature can be increased to 280 ~ 300 ℃.Polyether ether ketone is good, the thermal stability of 420 ℃ in air.2 h under weightlessness is only 2%, at 500 ℃ was 2.5%, significantly thermo-gravimetric 500 ℃.Polyether ether ketone of long-term use of temperature is about 200 ℃, under this temperature, still can keep the high tensile strength and bending modulus, PEEK Plastics is also a kind of very strong material, has excellent resistance to creep and fatigue performance for a long time.
PEEK Plastics electrical insulating performance is very excellent, volume resistivity of about 10 ~ 10 Ω · cm.It still has small dielectric constant and dielectric loss in high frequency range.For example, in 10Hz, the dielectric constant in the room is only 3.2 and the dielectric loss is only 0.02.
The chemical stability of polyether ether ketone is also very good. In addition to concentrated sulfuric acid, almost any chemical reagent is very stable, even at high temperature, PEEK Plastics can maintain good chemical stability.In addition, PEEK Plastics has excellent heat resistance and steam resistance.In 200 ~ 250 ℃ steam can be used for a long time.
PEEK Plastics with good flame retardancy, in normal circumstances it is difficult to burn, even burning, smoke and harmful gas release a quantity to also is very low, even lower than low smoke volume of polymer such as ptfe.In addition, PEEK Plastics has excellent radiation resistance.Its resistance to alpha rays, beta gamma rays and gamma rays is the best current polymer material.The wire products covered with it can withstand gamma rays of 1.1 x 10Gy.
The polyether ether ketone has good fluidity and thermal stability at the melting point.Therefore, PEEK Plastics has the typical processing performance of thermoplastic plastic. Therefore, it can be used for injection molding, extrusion, blow molding and laminating, and also spinning and making films.Although the polyether ether ketone melt processing temperature range is 360 ~ 360 ℃, but because of its thermal decomposition temperature above 520 ℃, and it still has the very wide processing temperature range.
Although the development history of PEEK Plastics is only a short 20 years, but because PEEK Plastics has the outstanding heat resistance, chemical corrosion resistance, radiation resistance and high strength, easy to machining, PEEK Plastics is currently in the nuclear industry, chemical industry, electronic appliances, machinery, instrument, automobile industry, and has been widely used in aerospace field.In particular, thermoplastic resin, which is excellent in heat resistance, can be used as the base material of high performance composite materials.
modified
PEEK Plastics performance of the pure material is difficult to meet the different needs of different industries, in special working environment need to modification of PEEK Plastics, its main means blending modification, copolymerization modification, reinforced composite, infill modification, nanometer modification and surface modification technology.The modification can increase the performance of PEEK Plastics, such as wear resistance, impact strength, etc., thereby extending the application range of PEEK Plastics, reducing the cost of materials and improving the processing performance of PEEK Plastics.
Application
PEEK Plastics has been widely used in aerospace, automotive manufacturing, electronics, medical and food processing.
PEEK Plastics has excellent performance, its application field will be more widely with the domestic application research, the current domestic set up the chongqing sanxin materials research center is a professional engaged in the research of PEEK in the field of application.The research center is under the chongqing government entities at all levels of leadership and care, is committed to in the field of automobile, electrical and electronic fields, transportation research, in the present walk at the forefront of the domestic application research.
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